ASTROSAT CZTI

Data Quality Report

Orbit 34510

Creation date: 2022-02-15T10:47:27.718594
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_156T01_9000004928_34510cztM0_level2.evt modeM0/AS1A05_156T01_9000004928_34510cztM0_level2_quad_clean.evt
Size (bytes)423,086,40059,158,080
Size403.5 MB 56.4 MB
Events in quadrant A2,727,003362,616
Events in quadrant B3,204,712361,544
Events in quadrant C2,900,807361,835
Events in quadrant D3,632,646345,859

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112343
B0127242
C0115862
D0142482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5128210.409516%
B51281432.788612%
C5128260.507020%
D51281072.086583%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7280 5129 9 9 0.12% 0.18%
B 7280 5129 72 72 0.99% 1.40%
C 7280 5129 16 16 0.22% 0.31%
D 7280 5129 88 88 1.21% 1.72%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 9 143 56668 421.32 665 655 132.9
A 15 17 52454 389.62 665 655 132.9
A 10 83 39191 289.86 665 655 132.9
B 0 229 248050 2026.54 652 638 122.1
B 5 172 230634 1883.89 652 638 122.1
B 0 189 52944 428.44 652 638 122.1
C 15 214 220148 1491.73 648 655 147.1
C 0 10 93144 628.58 648 655 147.1
C 14 67 40319 269.57 648 655 147.1
D 8 195 520025 3304.6 647 631 157.2
D 10 199 128594 814.15 647 631 157.2
D 12 218 83766 528.94 647 631 157.2

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter